Vibrators with built-in motors
These vibrators are designed for compaction of concrete mixes poured into cast-in-situ constructions with various reinforcement density in hydraulic engineering as well as for manufacture of concrete and reinforced concrete articles for precast concrete construction with the minimum spacing of reinforcement exceeding 1,5 of the head diameter.
The hermetically sealed body of the vibro-head comprises a 3-phase electric asynchronous squirrel-cage motor and unbalanced masses, which rotations generate exciting force. The bearings are lubricated with spindle oil from the bottom part of the vibro-head.
Due to particularities of its design, the vibrator has to be powered with 200Hz voltage. In order to meet this requirement and provide the voltage, converters are used. The converters can be either external (connected) or integrated.